Note - Blast analyses are based on comparisons of the phosphosites and the bordering four amino acids on each side of these phosphosites.

Phosphosite
Human Protein:	CDK13
Human P-Site:	S433
P-Site Sequence:	HRLSRSRSRHSSISP
UniProt:	Q14004
Intern. Prot. ID:	IPI00456970

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	CDK13	Q14004	S433	HRLSRSRSRHSSISP	100 / 9 AA	165
Phosphosite 1:	CROP	O95232	S297	RKRSRSRSRHSSRTS	100 / 9 AA	51
Phosphosite 2:	SFRS4	Q08170	S198	HSRSRSRSRHSRKSR	100 / 8 AA	57
Phosphosite 3:	SPEN	Q96T58	S244	YQHSRSRSPHSSQSR	88 / 9 AA	402
Phosphosite 4:	DHX38	Q92620	S176	DRDERDRSRHSSRSE	87 / 8 AA	141
Phosphosite 5:	CDK13	Q14004	S431	SRHRLSRSRSRHSSI	100 / 7 AA	165
Phosphosite 6:	CDK13	Q14004	S424	SRHSRSRSRHRLSRS	100 / 7 AA	165
Phosphosite 7:	CDK13	Q14004	S233	SEASKSRSRHSHSGE	87 / 8 AA	165
Phosphosite 8:	CROP	O95232	S295	ERRKRSRSRSRHSSR	100 / 7 AA	51
Phosphosite 9:	RSRC2	Q7L4I2	S182	RIRSRSRSRSRHRHR	100 / 7 AA	51
Phosphosite 10:	SFRS4	Q08170	S196	RSHSRSRSRSRHSRK	100 / 7 AA	57
Phosphosite 11:	CDK12	Q9NYV4	S379	KKRSSSRSRHSSISP	88 / 9 AA	164
Phosphosite 12:	RSRC2	Q7L4I2	S184	RSRSRSRSRHRHRTR	100 / 7 AA	51
Phosphosite 13:	CDK13	Q14004	S422	YSSRHSRSRSRHRLS	100 / 7 AA	165
Phosphosite 14:	DIAPH2	O60879	S1092	VPLERSRSRHNGAIS	75 / 8 AA	126
Phosphosite 15:	SFRS6	Q13247	S208	RRRSRSRSRRSSRSR	88 / 9 AA	40
Phosphosite 16:	TRA2B	P62995	S60	RSESRSRSRRSSRRH	88 / 9 AA	34
Phosphosite 17:	CDX4	O14627	S152	KASSPSRSRHSPYAW	77 / 9 AA	30
Phosphosite 18:	CDK13	Q14004	S231	GGSEASKSRSRHSHS	85 / 7 AA	165
Phosphosite 19:	SFRS2	Q01130	S142	RSRSRSRSRYSRSKS	87 / 8 AA	25
Phosphosite 20:	WNK1	Q9H4A3	S1110	RKSVRSRSRHEKTSR	100 / 6 AA	251